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Leases (Tables)
 12 Months Ended
Dec. 31, 2021
Leases [Abstract]  
Summary of right of use asset and lease liability balances for operating and finance leases
The following table summarizes the right of use asset and lease liability balances for the Company’s operating and finance leases at December 31, 2021 and 2020:
December 31, 2021December 31, 2020
(in millions)Operating LeasesFinance LeasesOperating LeasesFinance Leases
ROU assets, net
Pipeline and storage$17 $23 $15 $26 
Railcars6 — 8 — 
Real estate and other14 18 14 21 
Lease liability
Pipelines and storage$17 $35 $16 $38 
Railcars6 — 8 — 
Real estate and other14 19 14 22 
Lease expense, terms, and discount rates For the year ended December 31, 2021, 2020, and 2019, we recognized lease expense comprised of the following components:
Year Ended December 31,
(in millions)202120202019
Operating lease expense$15 $17 $12 
Finance lease expense:
Amortization of ROU asset$6 $6 $7 
Interest expense on lease liability5 6 6 
Short-term lease expense$7 $8 $8 
The following outlines the remaining lease terms and discount rates used in the measurement of the Company’s ROU assets and liabilities:
December 31, 2021December 31, 2020
Operating LeasesFinance LeasesOperating LeasesFinance Leases
Weighted-average remaining lease term4.1 years7.2 years3.1 years8.1 years
Weighted-average discount rate5.4 %9.0 %5.5 %9.0 %
Summary of remaining minimum lease payments for operating leases
The following summarizes the remaining minimum lease payments through maturity of the Company’s right-of-use assets and liabilities at December 31, 2021:
(in millions)Operating LeasesFinance Leases
Year Ended December 31,
2022$14 $11 
202312 10 
20248 10 
20253 10 
20261 10 
Thereafter4 23 
Total lease payments42 74 
Less: imputed interest(5)(20)
Total lease liability$37 $54 
Summary of remaining minimum lease payments for finance leases
The following summarizes the remaining minimum lease payments through maturity of the Company’s right-of-use assets and liabilities at December 31, 2021:
(in millions)Operating LeasesFinance Leases
Year Ended December 31,
2022$14 $11 
202312 10 
20248 10 
20253 10 
20261 10 
Thereafter4 23 
Total lease payments42 74 
Less: imputed interest(5)(20)
Total lease liability$37 $54